Karl Theodor Jaspers (; 23 February 1883 – 26 February 1969) was a German-Swiss
psychiatrist and
philosopher who had a strong influence on modern
theology,
psychiatry and
philosophy. After being trained in and practicing psychiatry, Jaspers turned to philosophical inquiry and attempted to discover an innovative
philosophical system. He was often viewed as a major exponent of
existentialism in Germany, though he did not accept this label.